Khulsanurus

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Khulsanurus
Temporal range: Late Cretaceous, Campanian
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: Theropoda
Family: †Alvarezsauridae
Subfamily: †
Parvicursorinae
Genus: †Khulsanurus
Averianov & Lopatin, 2021
Type species
†Khulsanurus magnificus
Averianov & Lopatin, 2021

Khulsanurus (meaning "tail from Khulsan") is an extinct genus of

theropod dinosaur from the Late Cretaceous Barungoyot Formation of the Khulsan Locality in the Gobi Desert region of Mongolia. The type and only species is Khulsanurus magnificus.[1]

Description

Khulsanurus is known from a holotype containing partial vertebral series of the neck and tail, scapulocoracoids, a right humerus, a possible left humerus, and a left pubis. Distinguishing autapomorphies of this specimen include pleurocoel-, carotid process-, and epipophysis-less cervical vertebrae, prominent infrapostzygapophyseal fossa of the caudal vertebrae which also bear anteriorly pointing prezygapophyses.[1]

Classification

Averianov & Lopatin (2021) placed Khulsanurus in a polytomy with Albinykus, Ceratonykus, Linhenykus, Parvicursor, Xixianykus, Qiupanykus, Nemegtonykus, PIN 5838/1 (=Ondogurvel) and a clade containing Shuvuuia and Mononykus in a strict consensus tree using unweighted characters. However, Averianov & Lopatin (2021) also recovered it in a polytomy with only Albinykus, Xixianykus, PIN 5838/1 (=Ondogurvel), Mononykus and Shuvuuia in a consensus tree using implied weighting.[1] Averianov & Sues (2022) conducted a phylogenetic analysis using implied weighting which recovered it in a similar position but with inclusion of a clade containing Linhenykus, Ceratonykus and Parvicuror and the exclusion of Qiupanykus and Nemegtonykus, while a 50% majority rule tree from the same analysis placed it within a polytomy with two clades.[2]

A phylogenetic analysis conducted by Averianov & Sues (2022) is reproduced below.[2]

Alvarezsauridae

Paleoenvironment

Khulsanurus was found in the Campanian

Hollanda
.

References

  1. ^
    S2CID 244421277
    .
  2. ^
    S2CID 247391327
    .
  3. ^ Carpenter, K., Hayashi, S., Kobayashi, Y., Maryańska, T., Barsbold, R., Sato, K., and Obata, I., 2011, "Saichania chulsanensis (Ornithischia, Ankylosauridae) from the Upper Cretaceous of Mongolia", Palaeontographica, Abteilung A, 294(1-3): 1-61
  4. doi:10.1111/zoj.12185
    .
  5. doi:10.1016/j.cretres.2016.10.004
    .
  6. ^ Kurzanov, S. M. (1990). "A new Late Cretaceous protoceratopsid genus from Mongolia". Paleontological Journal. 24: 85−91.
  7. ^ Maryańska, T.; Osmólska, H. (1975). "Protoceratopsidae (Dinosauria) of Asia" (PDF). Palaeontologia Polonica. 33: 134−143.
  8. ^ Maryańska, T.; Osmólska, H. (1974). "Pachycephalosauria, a new suborder of ornithischian dinosaurs" (PDF). Palaeontologica Polonica (30): 45−102.
  9. ^ Sullivan, R. M. (2006). "A taxonomic review of the Pachycephalosauridae (Dinosauria: Ornithischia)". New Mexico Museum of Natural History and Science Bulletin (35): 347–365.
  10. S2CID 132780322. Archived from the original
    (PDF) on 2021-07-08. Retrieved 2021-11-19.
  11. doi:10.14770/jgsk.2019.55.2.179
    .
  12. S2CID 84366476
    .
  13. ^ Kurzanov, S. and Bannikov, A. (1983). "A new sauropod from the Upper Cretaceous of Mongolia". Paleontologicheskii Zhurnal 2: 90–96.
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